Question

我遇到了一些严重问题，我有一个列表视图，其中填充了数据库中的条目，我在listview中的每一行都有一个自定义行（TextView1 | TextView2 | TextView3 | Checkbox）。

我想要做的就是在每个复选框上放置一个监听器，以便在检查时将其从列表视图中删除并从数据库中删除。我有一个函数，当它传递Textview1的值时，它会从数据库中删除该行。

我遇到的问题是尝试从复选框或甚至textview值中获取行ID。我到处搜索但仍然无法正常工作

复选框

Cursor cursor = db.getAllItems();

    //String[] columns = new String[] {db.KEY_NAME, db.KEY_CODE, db.KEY_ROWID};
    final String[] columns = new String[] {db.KEY_ITEM_NAME, db.KEY_MEASUREMENT, db.KEY_UNIT};

    int[] to = new int[] {R.id.ingredientName, R.id.ingredientMeasurement, R.id.ingredientUnit};

    final SimpleCursorAdapter myCursorAdapter = new SimpleCursorAdapter(this,R.layout.row4, cursor, columns, to, 0);

    final ListView shoppingList = (ListView) findViewById(R.id.shoppingList);
    shoppingList.setClickable(false);
    //shoppingList.setChoiceMode(shoppingList.CHOICE_MODE_SINGLE);
    shoppingList.setAdapter(myCursorAdapter);

    CheckBox check = (CheckBox) findViewById(R.id.checkBox1);
    check.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (buttonView.isChecked()) {
                //how do i get the row_id or the text view value?
            } else {
                //do nothing
            }
            }

        });

Answer 1

使用getTag()方法。例如，check.setTag（您想要的ID ）`

在利斯特纳 int id =(Integer) Buttonview.getTag()

Answer 2

据我所知，这种实现是不可能的。您必须创建自定义适配器

public class CustomAdapter extends SimpleCursorAdapter{

    public CustomAdapter(Context context, int layout, Cursor c, String[] from, int[] to) {
        super(context, layout, c, from, to);
    }

    public View getView(final int position, View convertView, ViewGroup parent){
        View view = super.getView(position, convertView, parent);
        CheckBox check = (CheckBox) findViewById(R.id.checkBox1);
        check.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            if (buttonView.isChecked()) {
                // position will give you the position of the clicked element from where you can fetch your data
            } else {
                //do nothing
            }
            }

        });
        return view;
    }
}

你可以通过

使用它

CustomAdapter adapter = new CustomAdapter(this, R.layout.row_layout, cursor, from, to);
list.setAdapter(adapter);

Android CheckBox删除

2 个答案: